%0 Journal Article
%A V. I. Derguzov
%T The existence of periodic motions and motions of a special form for Hamiltonian systems with small parameter
%J Doklady Akademii Nauk
%D 1969
%P 757-760
%V 186
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1969_186_4_a4/
%G ru
%F DAN_1969_186_4_a4